Every kid is unique, so having calming and distracting options is always an asset to a parent and alike. Being a 3 y/o kid, I had a serious surgery with a rather weak local anesthesia once (almost lost my eye). I can still recall that pain and terror. But being distracted by my favorite toy in the moms hands I immediately became much more calm and tolerant to the procedure helping the doctor to do everything safely, decently, and fast. In many children dentist clinics, little children are watching cartoons sitting in the dental procedures chair also for a good reason...

Couch? I can sleep in a DIY lean-to, which plans I can find in my phone or invent right on location, but I would definitely want to be able finding in my phone the precise reloading data for the new gun I found on a dead body. I want to know if my headache is my usual reaction to the air pressure jump, or a symptom of a possible CO poisoning or a fever... Etc.